58343 ZIP Code — Knox, ND
Benson County, North Dakota
ZIP code 58343 is located in Knox, North Dakota, within Benson County. It covers approximately 57.70 square miles and serves a population of 55 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 701.
55
population
57.70
sq mi land
Standard
ZIP type
Central (CT)
timezone
58343 ZIP code map
Cities in ZIP code 58343
Below are the cities the US Postal Service accepts for ZIP code 58343. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Knox | Acceptable |
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 55 |
| Population density | 1 / sq mi |
| State FIPS | 38 |
| County FIPS | 005 |
| Geography | |
|---|---|
| Land area | 57.70 sq mi |
| Water area | 2.05 sq mi |
| Latitude | 48.3267 |
| Longitude | -99.7278 |
| Timezone | Central (CT) |
| Area code | 701 |
Total population by age
Gender
Race & ethnicity
Economics
updated 05/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 64.7% | 50.4% | 37.8% |
| $50k – $100k | 35.3% | 28.7% | 32.8% |
| $100k – $200k | 0.0% | 15.1% | 23.3% |
| Over $200k | 0.0% | 5.8% | 6.0% |
Demographics & statistics
55
Population
1
People per sq mi
66.8
Median age
$92,813
Median household income
$33,251
Per capita income
$217,500
Median home value
$0
Median monthly rent
100.0%
Home ownership
5.5%
Poverty rate
8.3%
Unemployment
22
Housing units
8.3%
Bachelor's or higher
Age distribution
Male
Female
2
10–14
2
1
15–19
2
0
25–34
1
1
35–44
2
4
45–54
6
2
55–59
2
6
65–74
7
6
75–84
7
2
85+
2
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 7 | 12.7% |
| 18 and over | 48 | 87.3% |
| 65 and over | 30 | 54.5% |
| Median age | 66.8 years | |
Race & ethnicity
White
92.7%
Asian
7.3%
| Group | Count | % |
|---|---|---|
| White | 51 | 92.7% |
| Asian | 4 | 7.3% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 64.7% | 50.4% | 37.8% |
| $50k – $100k | 35.3% | 28.7% | 32.8% |
| $100k – $200k | 0.0% | 15.1% | 23.3% |
| Over $200k | 0.0% | 5.8% | 6.0% |
$15k–$25k
14.3%
$50k–$75k
33.3%
$75k–$100k
19.0%
$150k–$200k
33.3%
| Range | % of households |
|---|---|
| $15k–$25k | 14.3% |
| $50k–$75k | 33.3% |
| $75k–$100k | 19.0% |
| $150k–$200k | 33.3% |
| Median income | $92,813 |
Housing
Home values
Under $50k
9.5%
$100k–$150k
23.8%
$200k–$300k
66.7%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $217,500 |
| Median rent / month | $0 |
| Owner occupied | 100.0% |
| Renter occupied | 0.0% |
| Vacant | 4.5% |
| Single-family detached | 100.0% |
| Large apartment buildings | 0.0% |
| Mobile homes | 0.0% |
| Median rooms | 7.5 |
| Avg household size (owned) | 2.62 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.0% |
| 2010–2019 | 0.0% |
| 2000–2009 | 0.0% |
| 1990–1999 | 0.0% |
| 1980–1989 | 0.0% |
| 1970–1979 | 0.0% |
| 1960–1969 | 22.7% |
| 1950–1959 | 0.0% |
| 1940–1949 | 31.8% |
| 1939 or earlier | 45.5% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 0.0% |
| 1 bedroom | 0.0% |
| 2 bedrooms | 13.6% |
| 3 bedrooms | 36.4% |
| 4 bedrooms | 0.0% |
| 5+ bedrooms | 50.0% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 0.0% |
| 1 vehicle | 19.0% |
| 2 vehicles | 4.8% |
| 3 or more | 76.2% |
Heating fuel
| Fuel type | % |
|---|---|
| Electricity | 14.3% |
| Propane / LP gas | 85.7% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 15 | 71.4% |
| Cohabiting couple | 0 | 0.0% |
| Male householder, no spouse | 2 | 9.5% |
| Female householder, no spouse | 4 | 19.0% |
| Households with children under 18 | 1 | 4.8% |
| Households with seniors (65+) | 20 | 95.2% |
| Average household size | 2.62 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 30.0% | 9.7% |
| Married | 70.0% | 51.6% |
| Separated | 0.0% | 0.0% |
| Widowed | 0.0% | 29.0% |
| Divorced | 0.0% | 9.7% |
Education
Less than 9th grade
0.0%
Some HS, no diploma
12.5%
HS graduate
50.0%
Some college, no degree
8.3%
Associate's degree
20.8%
Bachelor's degree
8.3%
Graduate / professional
0.0%
| Metric | % |
|---|---|
| HS diploma or higher | 87.5% |
| Bachelor's or higher | 8.3% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 0 | 0.0% |
| Kindergarten | 0 | 0.0% |
| Elementary school | 4 | 57.1% |
| High school | 3 | 42.9% |
| College / grad school | 0 | 0.0% |
Employment
Industry of employment
Professional & management
63.6%
Manufacturing
36.4%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 36.4% |
| Service | 0.0% |
| Sales & office | 63.6% |
| Natural resources & construction | 0.0% |
| Production & transportation | 0.0% |
Employment type
| Type | % |
|---|---|
| Private sector | 100.0% |
| Government | 0.0% |
| Self-employed | 0.0% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 100.0% |
| Carpool | 0.0% |
| Public transit | 0.0% |
| Walk | 0.0% |
| Work from home | 0.0% |
| Other means | 0.0% |
| Avg commute (minutes) | 0.0 |
Poverty
All people
5.5%
Under 18 years
0.0%
18 and over
6.3%
Married-couple families
0.0%
Female-led households
0.0%
Income support
| Source | % of households |
|---|---|
| Social Security | 95.2% |
| Retirement income | 33.3% |
| Supplemental Security | 0.0% |
| Cash public assistance | 0.0% |
| Food stamps / SNAP | 4.8% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 34.7% |
| High blood pressure | 40.4% |
| High cholesterol | 36.1% |
| Diabetes | 13.0% |
| Heart disease | 10.2% |
| Stroke | 4.3% |
| Asthma | 8.8% |
| Arthritis | 31.5% |
| Kidney disease | 4.0% |
| Pulmonary disease | 8.5% |
| Cancer | 9.8% |
| Behavior / access | % |
|---|---|
| Smoking | 18.6% |
| Binge drinking | 17.4% |
| No physical activity | 27.1% |
| Less than 7 hrs sleep | 28.1% |
| Depression | 16.6% |
| Fair or poor health | 15.2% |
| Poor mental health | 10.9% |
| Poor physical health | 11.0% |
| No health insurance | 9.6% |
| Visited doctor (checkup) | 74.8% |
| Visited dentist | 65.0% |
| Cholesterol screening | 92.1% |
| Teeth loss | 14.7% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 11 | 22.9% |
| Disability | % |
|---|---|
| Any disability | 12.7% |
| Under 18 | 0.0% |
| 18–64 years | 16.7% |
| 65 and over | 13.3% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 54.5% |
| Public insurance | 81.8% |
| No insurance | 5.5% |
| Uninsured under 19 | 0.0% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 55 | 100.0% |
| Spanish | 0 | 0.0% |
| Other Indo-European | 0 | 0.0% |
| Asian & Pacific Islander | 0 | 0.0% |
| Other languages | 0 | 0.0% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 51 | 92.7% |
| Born in same state | 51 | 92.7% |
| Born in different state | 26 | 47.3% |
| Foreign born | 0 | 0.0% |
| Naturalized citizen | 4 | 7.3% |
| Not a US citizen | 4 | 100.0% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Polish | 14 | 25.5% |
| Italian | 7 | 12.7% |
| Ancestry | Count | % |
|---|---|---|
| Dutch | 4 | 7.3% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 38.2% |
| Internet access | 85.7% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 58343
What city is ZIP code 58343 in?
ZIP code 58343 is primarily assigned to Knox, North Dakota.
What county is ZIP code 58343 in?
ZIP code 58343 falls within Benson County, North Dakota.
Does ZIP code 58343 have a large retiree population?
95% of households in ZIP code 58343 receive Social Security income, suggesting a significant retiree or disability population.
Does ZIP code 58343 have an older population?
55% of residents in ZIP code 58343 are 65 or older, above the national average of ~17%.
How educated is the population of ZIP code 58343?
8% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.
Does ZIP code 58343 have a large veteran population?
23% of civilians in ZIP code 58343 are veterans, above the national average of ~7%.
What timezone is ZIP code 58343 in?
ZIP code 58343 observes the CST timezone.